Customer reviews

I'm a retired HVAC professional and sold, installed and serviced more A. O. Smith water heaters than I can count. This new model has incorporated several things I always felt were missing on earlier generations. The fan has been greatly improved, connections are in all the right places, and it is noticeably quieter than the unit it replaced.

Closet installation with vent to hall

Boiler Bob · Charlotte, NC · June 12, 2026

Installation took about three hours and went very well. After my utility rebate and the federal tax credit my out-of-pocket cost was comparable to a conventional electric tank, and my monthly electric bill dropped immediately. Easily the best home upgrade I've made.

New water heater on left piped into old water heater

Adam · Columbus, OH · May 29, 2026

I finally decided to go all in on a heat pump water heater. Power consumption has been cut by about 75% — absolutely amazing. Plenty of hot water for the whole family and the app makes it easy to track daily usage and switch modes.

Newly installed A. O. Smith Signature 900 with 10-year warranty

Charles R. · Sarasota, FL · May 8, 2026

My old water heater used 19 kWh per day; this one averages 3.6 kWh per day on an energy monitor. As a bonus it dehumidifies and cools the basement all summer — the floor used to be visibly damp and now it stays dry.

Basement floor that used to be damp from condensation

PeterK · Richmond, VA · April 22, 2026

Very easy to install: two plumbing connections and three wires, plus the condensation tube to a drain. Water in and out are at the top just like a gas heater, which made the swap simple, and it runs at a level you barely notice from the next room.

Plumbing and wiring connections on the new water heater

Gregor · Denver, CO · April 3, 2026

This is a great water heater. My electric bill has gone down versus my 20-year-old 50-gallon tank and we still have hot water whenever we need it, even with back-to-back showers.

Installed heat pump water heater in a utility room

James T. · Kankakee, IL · March 18, 2026

Swapped out a 12-year-old electric tank and the difference on my utility bill was immediate. Heat pump mode alone keeps up with two adults and three kids without ever running the elements.

Closet installation with vent to hall

Marcus D. · Austin, TX · June 5, 2026

I was worried about noise since the unit sits in a laundry closet next to a bedroom. You can hear a soft hum standing next to it and nothing at all with the door closed.

New water heater on left piped into old water heater

Linda W. · Portland, OR · June 1, 2026

Performance is excellent and the app is genuinely useful. Only advice: figure out where the condensate line goes before you start, that took me longer than the plumbing.

Newly installed A. O. Smith Signature 900 with 10-year warranty

Ray S. · Phoenix, AZ · May 24, 2026

We travel a lot, so being able to drop the unit into vacation mode from the phone and have it heat back up before we land is fantastic. Hot water is plentiful and consistent.

Basement floor that used to be damp from condensation

Tanya B. · Nashville, TN · May 19, 2026